Facebook is trying hard to get users to user and like its new profile re-design. I think one of the funniest new additions are little yellow stickies on all the new and non-obvious additions. Kinda of a “we know you’ll miss this if we don’t tell you” approach to interface design.
I’m not sure how successful this will be with users. In my case I’m mostly just clicking the x to get rid of these and non-obvious features will probably be lost on me or at least until Facebook changes something again.